高等学校化学学报

高等学校化学学报

• 研究论文 • 上一篇    下一篇

介孔TiO2-ZnO复合薄膜的制备与表征

陶俊超1, 孙艳1, 徐建2, 王虎2, 陈鑫1, 戴宁1   

    1. 中国科学院上海技术物理研究所, 红外物理国家重点实验室, 上海 200083;
    2. 上海市计量测试技术研究院, 上海 201203
  • 收稿日期:2008-04-03 修回日期:1900-01-01 出版日期:2008-09-10 发布日期:2008-09-10
  • 通讯作者: 陈鑫

Preparation and Characterization of Mesoporous TiO2-ZnO Thin Films

TAO Jun-Chao1, SUN Yan1, XU Jian2, WANG Hu2, CHEN Xin1*, DAI Ning1   

    1. National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China;
    2. Shanghai Institute of Measurement and Test Technology, Shanghai 201203, China
  • Received:2008-04-03 Revised:1900-01-01 Online:2008-09-10 Published:2008-09-10
  • Contact: CHEN Xin

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摘要： 以三嵌段聚合物P123为模板剂, 以钛酸异丙酯和二水乙酸锌为无机前驱体, 利用溶胶-凝胶法和旋涂法成功地制备了不同ZnO含量的介孔TiO2-ZnO复合薄膜. 在ZnO前驱体摩尔分数为0~50％范围内获得薄膜质量较高的介孔TiO2-ZnO复合薄膜. 用小角XRD、扫描电子显微镜(SEM)、高分辨透射电子显微镜(HRTEM)、能谱仪(EDS)、紫外-可见吸收光谱(UV-Vis)及X射线光电子能谱(XPS)对所得的复合薄膜进行了表征和分析. EDS和XPS等研究证明介孔薄膜为TiO2和ZnO的复合体系, 且ZnO前驱体含量的增加仍能保持TiO2-ZnO复合薄膜的均匀性. UV-Vis研究结果表明, 介孔复合薄膜的光学带隙宽度为3.45-3.58 eV, 随着ZnO含量的增加, 复合薄膜的紫外吸收蓝移.

关键词: 介孔材料, TiO2-ZnO, 复合薄膜

Abstract: We reported the preparation of well-organized mesoporous TiO2-ZnO thin films with titanium isoproxide and zinc acetate dihydrate as the inorganic precursors and triblock copolymer(Pluronic P123) as the template via a sol-gel and spin-coating process. The molar fraction of ZnO could be tuned in the mesoporous TiO2-ZnO thin film by varying the molar fraction of Zn precursor in the range from 0 to 50%. The resulting films were characterized and analyzed via small-angle X-ray diffraction(SAXRD), scanning electron microscopy(SEM), high resolution transmission electron microscopy(HRTEM), energy-dispersive spectrometry(EDS), UV-Vis absorption spectrum and X-ray photoelectron spectroscopy(XPS). Both EDS and XPS demonstrate that the as-synthesized mesoporous thin films were made of TiO2 and ZnO. With ZnO molar fraction increased, the optical band gap of the thin films varied from 3.45 eV to 3.58 eV.

Key words: Mesoporous materials, TiO2-ZnO, Composite thin films

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